Plastic film width control system
TSM Control Systems
The TSM Automatic Width Control System gives you, the customer, three options for maintaining a specific bubble size during normal operation. These options are ideal for managing on-the-fly size changes, reducing the time it takes to get the bubble on size and also minimizing changes in layflat due to temperature conditions or film stretch. Options two & three, as described below, offer optimum systems for gusseted film.
Option 1: Layflat Measurement
A single Layflat scanner houses two dynamic infra-red sensors which automatically seek and track the edges of the film irrespective of colour or thickness.
Option 2: Bubble Diameter Measurement
(Optional) 3 x ultrasonic sensors can be positioned around the circumference of the film, situated just above the frost line, to measure the bubble diameter.
Option 3: Combined Layflat & Ultrasonics
(Optional) Both the Layflat & the Bubble Diameter Measurement system are combined to give the finest automatic width control system on the market. (Either option computes the width correct to the nearest 0.1 mm). A control action proportional to any error is initiated via the TSM Air Correction Unit.
NOTE: - For fully rotating dies, an air compressor in conjunction with a radio transmitter and receiver is used.
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